- preg_match: documentation ( source)
- str_replace: documentation ( source)
- explode: documentation ( source)
<?php
$samp = "This is an . example text using & my / Regex expression";
preg_match('/[^a-zA-Z_\s]/', "", $samp);
$samp = str_replace(" "," ",$samp);
$jk = explode(" ",$samp);
$i = sizeof($jk);
$j = 0;
for($j=0;$j<$i-1;$j++)
{
echo $jk[$j]." ".$jk[$j+1]."\n";
}